Bugfix release

• funcr: Add a new Option MaxLogDepth which controls how many levels of nested fields (e.g. a struct that contains a struct that contains a struct, etc.) it may log. Every time it finds a struct, slice, array, or map the depth is increased by one. When the maximum is reached, the value will be converted to a string indicating that the max depth has been exceeded. If this field is not specified, a default value will be used.